<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>测试JSONP解决跨域</title>
    </head>
    <body>
        <h2>该页面是测试JSONP解决跨域</h2>
        <script type="text/javascript" src="https://cdn.bootcss.com/jquery/3.4.1/jquery.js"></script>
        <script type="text/javascript">
            function demo(arr){
                console.log(arr)
            }
        </script>
        <script type="text/javascript" src="http://localhost:3000/test_get"></script>
    </body>
</html>